食管电极导管使用次数与食管调搏起搏电压阈值的关系

摘要

Objective To explore the relationship between the frequency of use of esophageal electrode catheter and transesophageal cardiac electrophysiology pacing threshold voltage. Methods A total of 123 patients who had esophageal pacing check during 2012 - 2013 in Daping Hospital were enrolled in this study. This study compared the pacing thresholds in groups A (having used for 1 - 2 times),B(having used for 3 - 4 times),C(having used for more than 4 times). Results The aver-age pacing threshold voltage was(13. 07 ± 2. 63)V in group A,(17. 15 ± 2. 60)V in group B,(21. 65 ± 1. 89)V in group C. The difference was significant(F = 147. 019,P < 0. 05);and group B was higher than group A,group C was higher than group A,B(P < 0. 05). Conclusion Esophageal electrode catheter will lead to the increase of pacing threshold due to passi-vation coating of surface of the electrode when it using for more than 3 - 4 times,which hinders its promotion and use in clinical practice.%目的：探讨食管电极导管的使用次数与食管调搏起搏电压阈值的关系。方法选取2012-2013年在重庆第三军医大学大坪医院行食管调搏检查的患者123例，比较采用新导管或曾使用过1~2次（A 组）、3~4次（B组）、4次以上（C 组）食管电极导管患者的起搏电压阈值。结果 A 组患者的起搏电压阈值为（13.07±2.63）V，B组患者的起搏电压阈值为（17.15±2.60）V，C 组患者的起搏电压阈值为（21.65±1.89）V，3组患者的起搏电压阈值间差异有统计学意义（F =147.019，P <0.05）；其中 B 组起搏电压阈值高于 A 组，C 组起搏电压阈值高于 A、B 组，差异均有统计学意义（P <0.05）。结论食管电极导管重复使用3~4次以上时因电极表面钝化膜的形成导致起搏电压阈值增高，阻碍了该项技术在临床的推广与使用。